with the developer-kit you are able to create your own sound-set and send them to friends. you can listen to music and also to stories created by sounds of your daily life and of the place where you live. sound-samples can be assigned to selected tags and channels. it's possible to overlay the channels, when sounds are looped. the sound-sheet works like a style-sheet, where you can assign a special look, fonts, colors, borders...to selected tags.